Like your boy leggy mine lives outside too, so it's three quarters of an hour for the weekly wash and dry (five watering cans of clean water pre wash and another five to rinse) a couple of hours for the monthly interior vac, external wash/dry and QED Angel Wax and about four hours plus for the quarterly full monty.
All weather dependant of course
Terywindy1 that wasn't you who flashed me from the opposite carriageway on the M6 near Carnforth in your Avant just over a month ago was it?